Paginator

 

分页器的使用

>>> from django.core.paginator import Paginator>>> objects = ['john', 'paul', 'george', 'ringo']>>> p = Paginator(objects, 2) >>> p.count        #数据总数4>>> p.num_pages    #总页数2>>> type(p.page_range)  # `
     
      ` in Python 2.
      
       >>> p.page_range        #页码的列表range(1, 3)     # =========[1,2] >>> page1 = p.page(1)   #第1页的page对象>>> page1
       
        >>> page1.object_list   #第1页的数据['john', 'paul'] >>> page2 = p.page(2)>>> page2.object_list    #第2页的数据['george', 'ringo']>>> page2.has_next()     #是否有下一页False>>> page2.has_previous() #是否有上一页True>>> page2.has_other_pages() #是否有其他页True>>> page2.next_page_number() #下一页的页码Traceback (most recent call last):...EmptyPage: That page contains no results>>> page2.previous_page_number()  #上一页的页码1>>> page2.start_index() # 本页第一条记录的序数（从1开始）3>>> page2.end_index() # 本页最后录一条记录的序数（从1开始）4 >>> p.page(0)       #错误的页，抛出异常Traceback (most recent call last):...EmptyPage: That page number is less than 1>>> p.page(3)       #错误的页，抛出异常Traceback (most recent call last):...EmptyPage: That page contains no results
       
      
     

 

实现一个分页效果

templates:

{% load staticfiles %}    
             
     
     
    
      
分页器
    
      
           {
    % for book in book_list %}         
       
{
   { book.title }} {
   { book.price }}
    {
    % endfor %}
      
    
      
                        {
    % if book_list.has_previous %}                    
       
上一页
                 {
    % else %}                    
       
上一页
                 {
    % endif %}                 {
    % for num in paginator.page_range %}                     {
    % if num == currentPage %}                       
       
{
   { num }}
                     {
    % else %}                       
       
{
   { num }}
                     {
    % endif %}                 {
    % endfor %}                 {
    % if book_list.has_next %}                    
       
下一页
                 {
    % else %}                    
       
下一页
                 {
    % endif %}            
      
     

views:

from django.shortcuts import render,HttpResponse# Create your views here.from django.core.paginator import Paginator, EmptyPage, PageNotAnIntegerfrom app01.models import *def index(request):    '''    批量导入数据:    Booklist=[]    for i in range(100):        Booklist.append(Book(title="book"+str(i),price=30+i*i))    Book.objects.bulk_create(Booklist)    '''    book_list=Book.objects.all()    paginator = Paginator(book_list, 10)    page = request.GET.get('page',1)    currentPage=int(page)    try:        print(page)        book_list = paginator.page(page)    except PageNotAnInteger:        book_list = paginator.page(1)    except EmptyPage:        book_list = paginator.page(paginator.num_pages)    return render(request,"index.html",locals())